Vehicle-tire.



.No. 760,237. PATENTED MAY 17, 1904.

LI GI VEHICLE TIRE.

APPLICATION FILED OUT. 3, 1903. N0 MODEL. 2 SHEETS-SHEET 1.

PATENTED MAY 17, 1904.

L. G.-NILS ON. VEHICLE TIRE.

APPLIGATIOH FILED 001:.2, 1903.

2 BHBETSBEBBT 2.

H0 MODEL.

06M avwcwto'a $515 @Hoamu UNITED STATES Patented May 1'7, 1904.

PATENT OFFICE.

LARS GUSTAF NILSON, OF NEW YORK, N. Y., ASSIGNOR OF TWO- TI-IIRDS TO SIEGFRIED M. FISCHER AND HARRY S. FISCHER,

OF NEW YORK, N. Y.

VEHICLE-TIRE.

SPECIFICATION formingv part of Letters Patent No. 760,237, dated May 17, 1904.

Application filed October 3, 1903.

To all whom, it may concern:

' Be it known that I, LARS Gnsrar N ILsoN, a citizen of the United States of America, residing at 7 6 Lexington avenue, New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Vehicle- Tires, of which the following is a full, clear, and exact specification.

This invention relates to vehicle-tires, and more particularly has reference to tires for heavy self-propelled vehiclessu'ch as omni buses, drays, 8:0. In vehicles of this type, on

account of the great weight on the wheels, the

tires necessarily have to be made solid and very heavy. It has been found that the solid tires as generally constructed become damaged at the points where secured to the rim before becoming damaged on the tread. This is due to the tendency of all tires to creep in spite of the various forms of fastenings and also to the varying amounts of compression and the lateral strains in going around corners. It also happens that the tire wears faster in some places than it does in others or becomes damaged by running over some sharp object. In the cases where continuous solid tires are used these injuries necessitate the replacementof the entire tire. Another objection to the use of continuous solid tires is that after having been in use some time they stretch and become larger than the wheel. In this case the tire becomes useless, as it cannot lie securely attached, and must be entirely removed and shortened.

The object of this invention is to provide an improved form of sectional tire with improved means for fastening the sections to the wheel so that the tendency to creep will be obviated and still permit easy removal of damaged sections.

A still further object of the invention is to provide a tire havinga greater tractive power and at the same time improve the form of joints between the sections so that bits of material, such as sand or gravel, will not be picked up either when moving straight ahead or when slipping laterally.

The invention will be more particularly described in connection with the accompanying drawings, in wl11ch Serial No. 175,537- (No modelJ' Figure l is a plan view showing one of the tire-sections detached. Fig. 2 is a side elevation. Fig. 3 is an end elevation. Fig. 4 is a plan view of a portion of thetire according to this invention. Fig. 5 is a side view partly in section. Fig. 6 is a transverse section showing the method of attaching the sections to the rim, and Figs. 7,8, and 9 are planviews showing the tire-sections having differentlyshaped ends.

a represents the segmental or sectional blocks or pieces of which my improved the is composed. Each block a is preferably formed A as shown in Figs. 1, 2, and 3that is to say, each block is similar to each other block-and is provided at one endwith a V-shaped recess 6, having rounded corners 7). At the other end it is pointed, as at 0, so as to fit into the recess b of the next block. Along the base of each block at the sides are provided longitu-' dinal ribs (0, which engage with the flanges of the rim d, as shown in Fig. 6.

The object of providing the interlocking or dovetail joints between the sections is to prevent the joints from opening up andadmittin g 75 sand or other matter, as would be iZllBCilSG if the joints were formed straightacross at right angles to the rim. This would especially be likely to happen where the wheel skids, as in going around a corner. The sections should 3 preferably be placed. with the apexes'pointing in the direction of motion, as shown in Fig. i by the arrow.

aresegmental plates which are clamped to the sides of the fellies by bolts amas e e, as shown in Figs. 5 and 6. The segiii'ental plates d 'are provided with recesseski" to-receive the ribs (0' of the tire sections or blocks a. The plates (2 4 also have inward projections j a, as shown in Figs. 4 and 5, which lit in the spaces formed by the rounded corners of the blocks. d indicates a depression in the plates 9 clamped, so that it cannot move outward or longitudmally. To reducethe strain-on the plates or flanges d, an additional fastening means is provided by means of-the nut f, which is embedded in the sections, and the bolt g, which passes radially through the felly and engages the nut f. Where large sections are used, it might be advisable to use more than one nut in each block, though generally one will be found suflicient.

Figs. 7, 8, and 9 show blocks having different ends, but embodying the same principles of construction. In Fig. 7 the dovetails are substantially rectangular in form' instead of being pointed, as in Fig. 1. In Fig. 8 the dovetail is at one side instead of in the middle. In Fig. 9 the ends of the sections are straight, but are inclined to the plates (Z. In all of these cases the joints will tend to close up and remain so, because the entire joint does not.

engage with the ground at the same time, as would be the case if the joint were at right angles to the rim.

It is obvious that the flanges (Z may be made continuous, so as to form rings, if desired. In practice, however, it is generally found advisable to form flanges (Z in segments, so that should'it be necessary to replace one or more might be advisable to provide additional in-.

dentations a in the flanges to engage with the blocks between their ends.

From the foregoing description it will be,

seen that I have provided a tire of increased tractive power which may be very securely attached to the rim and which will not be liable to creep. I

Modifications and changes may be made without departing from the scope of the invention, and I do not desire to be limited to the exact construction which I have shown.

Having thus described my invention, I declare that what Iclaim as new, and desire to secure by Letters Patent, is

1. The combination witharim, ofatire composed of sections, said rim having teeth eX- tending radially and projecting between the joints in the sections, substantially .as described. V

2. The combination witha rim, of atire composed of ribbed abutting sections, said rim having channels engaged with said ribs, and having projections extending between the joints in the sections the projections on one side being independent of those on the other, substantially as described.

3. The combination with a felly having a sectional tire, of a rim composed of segments having radially-extendingteeth, said teeth be ing adapted to retain the tire-sections against movement, the segments being independently fastened to the felly, substantially as described.

4. In a vehicle-tire, the combination with a felly carrying a tire-section, of a grooved rim clamping the section on its sides and having projections engaging the section at its. ends, the projections on one side being independent of those onthe other side of the rim, substantially as described.

5. Ina vehicle-tire, the combination with a felly carrying a tire-section, of a rim attached to the felly and clamping the section on its sides, and having projections engaging the sections the projections on one side being independent of those on the other, substantially as described.

6. The combination with a felly having a tire composed of mutually-interlocking sec tions, of segments holding the sections in place and having projections extending between adjacent sections, said segments being independently attached to the felly, substantially as described. V

7. The combination with a rim, ofa tire composed of sections having rounded corners, said rimhaving teeth extending outwardly and projecting into the recesses formed by the rounded corners, substantially as described.

8. The combination with a rim, of atire composed of sections having rounded corners, teeth on said rim extending outwardly and projecting into the recesses formed by the rounded corners, the joints between said sections meeting in other than a straight line at right angles to the plane of the'wheel, substantially as described.

9. The combination with a rim, of a tire composed of sections haying rounded corners,teeth on said run extending outwardly and pro ecting into the recesses formed by the rounded corners, the joints between said sections extending radially of the wheel and meeting in other thana straight line at right angles to the plane of the wheel, substantially as described.

, 10. The combination with a felly, of a tire composed of sections, independent means in each section engaging the felly, for fastening the sections thereto, a rim attached to the felly and engaging the sides of the sections, and means on the rim holding the sections against longitudinal movement, substantially as described. V

11. The combination with a felly, of a tire composed of wedge-shaped, interlocking sec-v tions against longitudinal movement, substantially as described.

13. The combination with a felly, of a tire composed of sections, independent means in each section engaging the felly, for fastening the sections thereto, a rim attached to the folly and engaging the sides of the sections, and means on the rim projecting partially between adjoining sections for holding them against longitudinal movement, substantially as described.

14. The combination with a felly, of a tire composed of interlocking sections, independent means in each section engaging the felly, for fastening the sections thereto, a rim attached to the felly and engaging the sides of the sections, and means on the rim projecting partially between adjoining sections for holding them against longitudinal movement, substantially as described.

15. The combination with a felly, of a tire composed of a series of resilient blocks, each block being wedge-shaped at one end and interlocking with the adjacent block, the blocks when assembled forming a continuous tread, and means for fastening the blocks directly to the felly, substantially as described.

16. The combination with a felly, of a tire composed of blocks of resilient material, the joints between the blocks meeting in other than a right angle to the plane of the wheel, and means for fastening each section directly to the felly, whereby a continuous tread is formed, substantially as described.

17 The combination with a folly, of a tire composed of blocks of resilient material, the joints between the blocks meeting in other than a right angle to the plane of the wheel, and independent means for fastening each section directly to the felly, whereby a continuous tread is formed, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

LARS GUSTAF NILSON. 

